Curiously enough, there is an ancient Persian tradition, according to which the monarchs of Iran, who held dominion "by the streams," waged war against Egypt, Syria, and Asia Minor. Of their heroes, who are described as Cushan, or from the land of Chusistan (= Scythians, Parthians?), the most notable is Rustan or Rastam, a name evidently akin to Rishathaim. And so ancient heathen records once more throw unexpected light upon the historical narratives of the Old Testament.


Taken from: Alfred Edersheim , The Bible History, Old Testament Volume III  1876-1887